Tube



FIG. 1 is a perspective view of the tube, showing my new design;

FIG. 2 is an end view of one end of the tube, the other end of the tube being an indentical view, necessary to show the internal and external features of the tube;

FIG. 3 is a top side view thereof, the bottom view being the same; and,

FIG. 4 is a right side view thereof, the left side view being the same, the tube is shown partially broken away by the dashed lines in FIGS. 1, 3, and 4 to indicate indeterminate length. 

The ornamental design for a tube, as shown and described. 